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Flow Over Notches Apparatus
  • Investigation of head against discharge.
  • Free overfill at the weir.
  • By using plate weirs as measuring weirs.
    • Determining the discharge coefficient
    • Comparison of measuring weirs (rectangular and V-notch).
  • Determining the discharge flow rate
  • Comparison of theoretical and measured discharge flowrate
  • Weirs
    • material: stainless steel
    • Square profile
      • L x W : 50 X 60 mm
      • Overall dimension: 195 x 191 mm
    • V-profile
      • angle of the section: 90° & 60°
      • height of the section: 60mm
      • Overall dimension: 195 x 191 mm
    • Level gauge
      • Head: 0…200mm
  • Flow Over Notches Apparatus (FM-018)
  • Hard copy user manual

The educational unit (FM-018) is designed to help students understand the use of weirs (Notches) as simple flow regulators. The unit works with and fits on the top of the Main Hydraulic Unit.

  • The educational unit allows tests on the relationships between upstream water level and weir discharge for different shaped notches.
  • The weirs is positioned easily and securely on the the main hydraulic unit base module from which the water is supplied.
  • The equipment includes a basic set of two typical measuring weirs including a V-notch weir and a rectangular notch weir.
  • Each weir fits in a sealed groove in the channel section, the weir can be installed and replaced quickly and easily.
  • All materials are corrosion-resistant to protect against corrosion.
  • The main hydraulic unit supplies water to the wide end of the tank.
  • Water flows through the channel and over the weir, where the deep tank exit allows clear observation of the water discharge.
  • The water level can be measured precisely using an adjustable depth gauge attached to a beam across the channel, therefore the head can be calculated.
  • The head is used to determine the discharge, which is then compared to the measured values from the main hydraulic unit.